Whitney Houston’s death certificate has been released and failed to determine the singer’s cause of death.

The legendary singer’s death certificate is listing “pending investigation” as the manner of death and “deferred” is written for the immediate cause.

While it is known that Whitney Houston drank alcohol and had taken prescription drugs before her death it is still not clear what the exact cause is – and it has been reported it will be hard to get a clear picture of exactly what she was taking.

According to The LA Times: “The Los Angeles County coroner’s office said Wednesday investigators have asked <<a number>> of doctors to provide them with Houston’s medical information.”

L.A. County Sheriff’s Sgt. Steve Opferman told LA Times: “Celebrities often get their prescription drugs from doctors who are more than willing to give them what they want and sometimes using members of their entourage.”

Whitney Houston’s death certificate has been released and failed to determine the singer’s cause of death

Whitney Houston’s funeral will take place on Saturday at the Fairview Cemetery in Westfield, NJ, which is the same place her father is buried.

The funeral will be broadcast by The Associated Press and will allow fans to pay their own tributes from home on the television and web.

There will be no public memorial service and pastor Marvin L Winans, who will be giving a eulogy said the family didn’t want “a parade”.

“I don’t think knowing Cissy (Houston’s mother) and the Houston family … it was a matter of public or private as it was this is my daughter, this is my sister, this is my mother, this is my friend and we want to do this with dignity.”